← Search
Sample SJ-85-56
NavDat sample number 45882 · PYROCLASTIC FALL
Sample
| Sample ID | SJ-85-56 |
|---|
| Rock name | PYROCLASTIC FALL |
|---|
| Rock type | VOLCANIC |
|---|
| Composition | FELSIC |
|---|
| Material | IGNEOUS |
|---|
Location
| Latitude | 38.08 |
|---|
| Longitude | -107.004 |
|---|
| Location | Cathedral Creek Ranch |
|---|
| State / province | COLORADO |
|---|
| Formation | Rat Creek Caldera Cycle, Rat Creek Tuff, middle rhyolite |
|---|
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|
| 26.6 |
|
26.1 |
27 |
|
|
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|
| SIO2 | 74.3 | | WT% | XRF |
| TIO2 | 0.304108 | | WT% | XRF |
| AL2O3 | 13.1577 | | WT% | XRF |
| FE2O3 | 1.83478 | | WT% | XRF |
| MGO | 0.354792 | | WT% | XRF |
| CAO | 1.54081 | | WT% | XRF |
| NA2O | 3.50737 | | WT% | XRF |
| K2O | 4.83531 | | WT% | XRF |
| P2O5 | 0.0810953 | | WT% | XRF |
| MNO | 0.0304108 | | WT% | XRF |
| LOI | 1.35 | | WT% | XRF |
| TOTAL | 99.95 | | WT% | XRF |
| ZN | 35 | | PPM | XRF |
| RB | 116 | | PPM | XRF |
| SR | 271 | | PPM | XRF |
| Y | 21 | | PPM | XRF |
| ZR | 195 | | PPM | XRF |
| NB | 13 | | PPM | XRF |
| PB | 29 | | PPM | XRF |
| CU | 3 | | PPM | XRF |
